Head tube angle determines the angle of your forks. A steeper HT (i.e 75°and higher) will make the bike turn quicker than a mellower angle (i.e 74.5 and lower°). The more responsive the frame, the more twitchy it will feel, especially at highspeed!
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Brakeless version of Ty Morrow's signature V4 frame from Fiend constructed with 4130 chromoly throughout. Features include heat-treated Mid bottom bracket shell and integrated head tube, a double-butted top tube with external gusset, oval double-butted down tube with external gusset, externally butted seat tube with integrated clamp, tapered seatstays and heat-treated 6mm thick dropouts with integrated tensioners.
Due to the nature of semi-transparent paint finishes the character of the raw tubing will be visible and may contain vein-like abnormalities making each frame unique. -
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Product Specs
- MATERIAL: 4130 Chromoly
- HEAD TUBE ANGLE: 75.5°
- SEAT TUBE ANGLE: 71°
- CHAIN STAY LENGTH: 12.9"
- BB HEIGHT: 11.625"
- WHEEL SIZE: 20"
- STANDOVER HEIGHT: 9"
- DROPOUT SIZE: 14mm
- HEADSET TYPE: Integrated
- BB TYPE: Mid
- BRAKE MOUNTS: Brakeless
- GYRO TABS:
- WEIGHT: 5 lbs (20.75")
Product Highlights
- Responsive Geometry with Short Backend and Steep Headtube
- Best suited to Street and Park riding
- Top & Down Tube Gusstes For Added Strength
- Dent Resistant Ovalised Down Tube
- Heat Treated 6mm Thick Dropouts
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NEED SOME HELP UNDERSTANDING FRAME GEOMETRY?
bmx frame geometry can look daunting but thanks to our handy guide below you will have it figured out in no time, and remember we're all bmxers here, so if you have any questions just ask.
Frame Size Chart
Frame Sizing is very much a personal preference, some riders like them longer, others shorter - here's a rough guide - if you have any questions remember we are here to help!
3ft - 4ft - best suited to a 16" or 18" wheeled bike
4ft - 5ft - 18" to 20" top tube
5ft - 5ft 4" - 20" to 20.25" top tube
5ft 4" - 5ft 8" - 20.25" to 21" top tube
5ft 8" - 6ft - 21" to 21.25" top tube
6ft Plus - 21" top tube or longer
Frame Geometry
Frame Geometry can take a bit of understanding - but here at SourceBMX we are here to help! The first thing to understand is that BMX frame Sizing is best measured by the length of the Top Tube - shown here as TT. Keep reading on to understand how the angles change how your frame will feel and check out our sizing chart below!
Headtube Angle (HT)
Chain Stay Length (CS)
The chain stay is essentially the length of the rear end of the bike. A shorter CS length will make the bike more responsive and a longer one more stable. As a rough guide a 13.5" long chain stay is about average.
Seat Tube Angle (ST)
Seat tube angles don’t vary too much (around 71°) and affect the centre of gravity. The steeper the angle the shorter your bike will feel. Some frames have a mellower seat tube angle (example 69˚) which makes for a longer frame without actually being longer and reduces how fast your frame turns.
Stand Over Height (SO)
Standover height is essentially how high your frame is. A frame with a low standover height is more responsive and easier to ‘throw around’ whilst a high SO height is more stable; particularly useful when going fast.
